1 Internal Medicine Department, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts, USA.
2 Internal Medicine Department, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts, USA; Cardiovascular Department, Mayo Clinic, Phoenix, Arizona, USA. Electronic address: Ahmed.mahmoud1@bmc.org.
3 Internal Medicine Department, Texas Tech University Health Science Center, Lubbock, Texas, USA.
4 Internal Medicine Department, Riverside Shore Memorial Hospital, Onancock, Virgina, USA.
5 Cardiovascular Department, Good Samaritan Medical Center, Boston, Massachusetts, USA.
6 Cardiovascular Department, Emerson Health, Concord, Massachusetts, USA.